/8 APPLIED PHYSIOLOGY 



DEMONSTRATION 



42. Nearly every one has felt the effects of intemperate eating. 

 When " stomach sick," a sharp-tasting gas and very sour food often 

 come up to the mouth, showing that acid fermentation is going on. 

 Notice how plainly a person feels his own heart beats after a large meal, 

 owing to the pressure of the distended stomach upon the heart. 



REVIEW TOPICS 



1. Tell how a person knows when and how much to eat 



or drink. 



2. Define an appetite and tell how it can be satisfied 



naturally. 



3. Illustrate an artificial appetite and tell how it can be 



distinguished from a natural appetite. 



4. Tell some of the ways in which men abuse their stom- 



achs by indulging their artificial appetites. 



5. Tell some of the effects of too rapid eating ; of imper- 



fect mastication ; of overeating ; of eating between 

 meals. 



6. Tell how food sours within the stomach. 



7. Tell how drinking at meal times is beneficial, and in 



what way it can be harmful. 



8. Tell how hot or cold food affects the stomach. 



9. Give some simple rules for eating. 



